Add not discharging battery state

internal/providers/battery.go

@@ -11,9 +11,10 @@ import (
 )
 
 const (
-	batteryStateFull        = "FULL"
+	batteryStateFull        = "FUL" // "full"
 	batteryStateDischarging = "BAT"
 	batteryStateCharging    = "CHR"
+	batteryStateNotCharging = "HLD" // for "hold" - present when charge threshold set
 	batteryStateUnknown     = "UNK"
 )
 
@@ -103,6 +104,8 @@ func (g *Battery) getState() (string, error) {
 		x = batteryStateDischarging
 	case "Charging":
 		x = batteryStateCharging
+	case "Not charging":
+		x = batteryStateNotCharging
 	case "Unknown":
 		fallthrough
 	default: